[deliverable/linux.git] / drivers / regulator / axp20x-regulator.c

/*
 * AXP20x regulators driver.
 *
 * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
 *
 * This file is subject to the terms and conditions of the GNU General
 * Public License. See the file "COPYING" in the main directory of this
 * archive for more details.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#include <linux/err.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/mfd/axp20x.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>

#define AXP20X_IO_ENABLED		0x03
#define AXP20X_IO_DISABLED		0x07

#define AXP22X_IO_ENABLED		0x03
#define AXP22X_IO_DISABLED		0x04

#define AXP20X_WORKMODE_DCDC2_MASK	BIT(2)
#define AXP20X_WORKMODE_DCDC3_MASK	BIT(1)
#define AXP22X_WORKMODE_DCDCX_MASK(x)	BIT(x)

#define AXP20X_FREQ_DCDC_MASK		0x0f

#define AXP22X_MISC_N_VBUSEN_FUNC	BIT(4)

#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg,	\
		    _vmask, _ereg, _emask, _enable_val, _disable_val)		\
	[_family##_##_id] = {							\
		.name		= (_match),					\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= (((_max) - (_min)) / (_step) + 1),		\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_min) * 1000,				\
		.uV_step	= (_step) * 1000,				\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.enable_val	= (_enable_val),				\
		.disable_val	= (_disable_val),				\
		.ops		= &axp20x_ops,					\
	}

#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg,	\
		 _vmask, _ereg, _emask) 					\
	[_family##_##_id] = {							\
		.name		= (_match),					\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= (((_max) - (_min)) / (_step) + 1),		\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_min) * 1000,				\
		.uV_step	= (_step) * 1000,				\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.ops		= &axp20x_ops,					\
	}

#define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask)		\
	[_family##_##_id] = {							\
		.name		= (_match),					\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.owner		= THIS_MODULE,					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.ops		= &axp20x_ops_sw,				\
	}

#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt)			\
	[_family##_##_id] = {							\
		.name		= (_match),					\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= 1,						\
		.owner		= THIS_MODULE,					\
		.min_uV		= (_volt) * 1000,				\
		.ops		= &axp20x_ops_fixed				\
	}

#define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages,	\
			_vreg, _vmask, _ereg, _emask)				\
	[_family##_##_id] = {							\
		.name		= (_match),					\
		.supply_name	= (_supply),					\
		.of_match	= of_match_ptr(_match),				\
		.regulators_node = of_match_ptr("regulators"),			\
		.type		= REGULATOR_VOLTAGE,				\
		.id		= _family##_##_id,				\
		.n_voltages	= (_n_voltages),				\
		.owner		= THIS_MODULE,					\
		.vsel_reg	= (_vreg),					\
		.vsel_mask	= (_vmask),					\
		.enable_reg	= (_ereg),					\
		.enable_mask	= (_emask),					\
		.linear_ranges	= (_ranges),					\
		.n_linear_ranges = ARRAY_SIZE(_ranges),				\
		.ops		= &axp20x_ops_range,				\
	}

static struct regulator_ops axp20x_ops_fixed = {
	.list_voltage		= regulator_list_voltage_linear,
};

static struct regulator_ops axp20x_ops_range = {
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear_range,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static struct regulator_ops axp20x_ops = {
	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
	.list_voltage		= regulator_list_voltage_linear,
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static struct regulator_ops axp20x_ops_sw = {
	.enable			= regulator_enable_regmap,
	.disable		= regulator_disable_regmap,
	.is_enabled		= regulator_is_enabled_regmap,
};

static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
	REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
	REGULATOR_LINEAR_RANGE(2500000, 0x9, 0x9, 0),
	REGULATOR_LINEAR_RANGE(2700000, 0xa, 0xb, 100000),
	REGULATOR_LINEAR_RANGE(3000000, 0xc, 0xf, 100000),
};

static const struct regulator_desc axp20x_regulators[] = {
	AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
		 AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
	AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
		 AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
	AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
	AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
		 AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
	AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
		 AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
	AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
			16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
			0x08),
	AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
		    AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
		    AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
};

static const struct regulator_desc axp22x_regulators[] = {
	AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
		 AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
	AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
		 AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
	AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
		 AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
	AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
		 AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
	AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
		 AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
	/* secondary switchable output of DCDC1 */
	AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
		    BIT(7)),
	/* LDO regulator internally chained to DCDC5 */
	AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
		 AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
	AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
	AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
	AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
	AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
	AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
	AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
	AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
	AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
	AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
	AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
	/* Note the datasheet only guarantees reliable operation up to
	 * 3.3V, this needs to be enforced via dts provided constraints */
	AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
		    AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	/* Note the datasheet only guarantees reliable operation up to
	 * 3.3V, this needs to be enforced via dts provided constraints */
	AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
		    AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
};

static const struct regulator_desc axp22x_drivevbus_regulator = {
	.name		= "drivevbus",
	.supply_name	= "drivevbus",
	.of_match	= of_match_ptr("drivevbus"),
	.regulators_node = of_match_ptr("regulators"),
	.type		= REGULATOR_VOLTAGE,
	.owner		= THIS_MODULE,
	.enable_reg	= AXP20X_VBUS_IPSOUT_MGMT,
	.enable_mask	= BIT(2),
	.ops		= &axp20x_ops_sw,
};

static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
	REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
};

static const struct regulator_linear_range axp809_dldo1_ranges[] = {
	REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
	REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
};

static const struct regulator_desc axp809_regulators[] = {
	AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
		 AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
	AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
		 AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
	AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
		 AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
	AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges,
			57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1,
			BIT(4)),
	AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
		 AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
	/* secondary switchable output of DCDC1 */
	AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
		    BIT(7)),
	/* LDO regulator internally chained to DCDC5 */
	AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
		 AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
	AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
	AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
	AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
		 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
	AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp809_dldo1_ranges,
			32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
			BIT(3)),
	AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
		 AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
	AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
	AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
	AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
		 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
	AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3300, 100,
		    AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3300, 100,
		    AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
	AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
};

static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
{
	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
	u32 min, max, def, step;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		min = 750;
		max = 1875;
		def = 1500;
		step = 75;
		break;
	case AXP221_ID:
	case AXP223_ID:
	case AXP809_ID:
		min = 1800;
		max = 4050;
		def = 3000;
		step = 150;
		break;
	default:
		dev_err(&pdev->dev,
			"Setting DCDC frequency for unsupported AXP variant\n");
		return -EINVAL;
	}

	if (dcdcfreq == 0)
		dcdcfreq = def;

	if (dcdcfreq < min) {
		dcdcfreq = min;
		dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
			 min);
	}

	if (dcdcfreq > max) {
		dcdcfreq = max;
		dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
			 max);
	}

	dcdcfreq = (dcdcfreq - min) / step;

	return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
				  AXP20X_FREQ_DCDC_MASK, dcdcfreq);
}

static int axp20x_regulator_parse_dt(struct platform_device *pdev)
{
	struct device_node *np, *regulators;
	int ret;
	u32 dcdcfreq = 0;

	np = of_node_get(pdev->dev.parent->of_node);
	if (!np)
		return 0;

	regulators = of_get_child_by_name(np, "regulators");
	if (!regulators) {
		dev_warn(&pdev->dev, "regulators node not found\n");
	} else {
		of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
		ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
		if (ret < 0) {
			dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
			return ret;
		}

		of_node_put(regulators);
	}

	return 0;
}

static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
{
	struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
	unsigned int mask;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
			return -EINVAL;

		mask = AXP20X_WORKMODE_DCDC2_MASK;
		if (id == AXP20X_DCDC3)
			mask = AXP20X_WORKMODE_DCDC3_MASK;

		workmode <<= ffs(mask) - 1;
		break;

	case AXP221_ID:
	case AXP223_ID:
	case AXP809_ID:
		if (id < AXP22X_DCDC1 || id > AXP22X_DCDC5)
			return -EINVAL;

		mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
		workmode <<= id - AXP22X_DCDC1;
		break;

	default:
		/* should not happen */
		WARN_ON(1);
		return -EINVAL;
	}

	return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
}

static int axp20x_regulator_probe(struct platform_device *pdev)
{
	struct regulator_dev *rdev;
	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
	const struct regulator_desc *regulators;
	struct regulator_config config = {
		.dev = pdev->dev.parent,
		.regmap = axp20x->regmap,
		.driver_data = axp20x,
	};
	int ret, i, nregulators;
	u32 workmode;
	const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
	const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
	bool drivevbus = false;

	switch (axp20x->variant) {
	case AXP202_ID:
	case AXP209_ID:
		regulators = axp20x_regulators;
		nregulators = AXP20X_REG_ID_MAX;
		break;
	case AXP221_ID:
	case AXP223_ID:
		regulators = axp22x_regulators;
		nregulators = AXP22X_REG_ID_MAX;
		drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
						  "x-powers,drive-vbus-en");
		break;
	case AXP809_ID:
		regulators = axp809_regulators;
		nregulators = AXP809_REG_ID_MAX;
		break;
	default:
		dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
			axp20x->variant);
		return -EINVAL;
	}

	/* This only sets the dcdc freq. Ignore any errors */
	axp20x_regulator_parse_dt(pdev);

	for (i = 0; i < nregulators; i++) {
		const struct regulator_desc *desc = &regulators[i];
		struct regulator_desc *new_desc;

		/*
		 * Regulators DC1SW and DC5LDO are connected internally,
		 * so we have to handle their supply names separately.
		 *
		 * We always register the regulators in proper sequence,
		 * so the supply names are correctly read. See the last
		 * part of this loop to see where we save the DT defined
		 * name.
		 */
		if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) ||
		    (regulators == axp809_regulators && i == AXP809_DC1SW)) {
			new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
						GFP_KERNEL);
			*new_desc = regulators[i];
			new_desc->supply_name = dcdc1_name;
			desc = new_desc;
		}

		if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) ||
		    (regulators == axp809_regulators && i == AXP809_DC5LDO)) {
			new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
						GFP_KERNEL);
			*new_desc = regulators[i];
			new_desc->supply_name = dcdc5_name;
			desc = new_desc;
		}

		rdev = devm_regulator_register(&pdev->dev, desc, &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register %s\n",
				regulators[i].name);

			return PTR_ERR(rdev);
		}

		ret = of_property_read_u32(rdev->dev.of_node,
					   "x-powers,dcdc-workmode",
					   &workmode);
		if (!ret) {
			if (axp20x_set_dcdc_workmode(rdev, i, workmode))
				dev_err(&pdev->dev, "Failed to set workmode on %s\n",
					rdev->desc->name);
		}

		/*
		 * Save AXP22X DCDC1 / DCDC5 regulator names for later.
		 */
		if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) ||
		    (regulators == axp809_regulators && i == AXP809_DCDC1))
			of_property_read_string(rdev->dev.of_node,
						"regulator-name",
						&dcdc1_name);

		if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) ||
		    (regulators == axp809_regulators && i == AXP809_DCDC5))
			of_property_read_string(rdev->dev.of_node,
						"regulator-name",
						&dcdc5_name);
	}

	if (drivevbus) {
		/* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
		regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
				   AXP22X_MISC_N_VBUSEN_FUNC, 0);
		rdev = devm_regulator_register(&pdev->dev,
					       &axp22x_drivevbus_regulator,
					       &config);
		if (IS_ERR(rdev)) {
			dev_err(&pdev->dev, "Failed to register drivevbus\n");
			return PTR_ERR(rdev);
		}
	}

	return 0;
}

static struct platform_driver axp20x_regulator_driver = {
	.probe	= axp20x_regulator_probe,
	.driver	= {
		.name		= "axp20x-regulator",
	},
};

module_platform_driver(axp20x_regulator_driver);

MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
MODULE_ALIAS("platform:axp20x-regulator");
Commit	Line	Data
dfe7a1b0 CC	1	/*
	2	* AXP20x regulators driver.
	3	*
	4	* Copyright (C) 2013 Carlo Caione <carlo@caione.org>
	5	*
	6	* This file is subject to the terms and conditions of the GNU General
	7	* Public License. See the file "COPYING" in the main directory of this
	8	* archive for more details.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*/
	15
	16	#include <linux/err.h>
	17	#include <linux/init.h>
	18	#include <linux/module.h>
	19	#include <linux/of.h>
	20	#include <linux/of_device.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/regmap.h>
	23	#include <linux/mfd/axp20x.h>
	24	#include <linux/regulator/driver.h>
	25	#include <linux/regulator/of_regulator.h>
	26
	27	#define AXP20X_IO_ENABLED 0x03
	28	#define AXP20X_IO_DISABLED 0x07
	29
3cb99e2e CYT	30	#define AXP22X_IO_ENABLED 0x03
3cb99e2e CYT	31	#define AXP22X_IO_DISABLED 0x04
1b82b4e4	32
dfe7a1b0 CC	33	#define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
dfe7a1b0 CC	34	#define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
1b82b4e4	35	#define AXP22X_WORKMODE_DCDCX_MASK(x) BIT(x)
dfe7a1b0 CC	36
	37	#define AXP20X_FREQ_DCDC_MASK 0x0f
	38
636e2a39 HG	39	#define AXP22X_MISC_N_VBUSEN_FUNC BIT(4)
636e2a39 HG	40
866bd951 BB	41	#define AXP_DESC_IO(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
	42	_vmask, _ereg, _emask, _enable_val, _disable_val) \
	43	[_family##_##_id] = { \
e0bbb38c	44	.name = (_match), \
dfe7a1b0	45	.supply_name = (_supply), \
880fe82d CYT	46	.of_match = of_match_ptr(_match), \
880fe82d CYT	47	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	48	.type = REGULATOR_VOLTAGE, \
866bd951	49	.id = _family##_##_id, \
dfe7a1b0 CC	50	.n_voltages = (((_max) - (_min)) / (_step) + 1), \
	51	.owner = THIS_MODULE, \
	52	.min_uV = (_min) * 1000, \
	53	.uV_step = (_step) * 1000, \
	54	.vsel_reg = (_vreg), \
	55	.vsel_mask = (_vmask), \
	56	.enable_reg = (_ereg), \
	57	.enable_mask = (_emask), \
	58	.enable_val = (_enable_val), \
	59	.disable_val = (_disable_val), \
	60	.ops = &axp20x_ops, \
	61	}
	62
866bd951 BB	63	#define AXP_DESC(_family, _id, _match, _supply, _min, _max, _step, _vreg, \
	64	_vmask, _ereg, _emask) \
	65	[_family##_##_id] = { \
e0bbb38c	66	.name = (_match), \
dfe7a1b0	67	.supply_name = (_supply), \
880fe82d CYT	68	.of_match = of_match_ptr(_match), \
880fe82d CYT	69	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	70	.type = REGULATOR_VOLTAGE, \
866bd951	71	.id = _family##_##_id, \
dfe7a1b0 CC	72	.n_voltages = (((_max) - (_min)) / (_step) + 1), \
	73	.owner = THIS_MODULE, \
	74	.min_uV = (_min) * 1000, \
	75	.uV_step = (_step) * 1000, \
	76	.vsel_reg = (_vreg), \
	77	.vsel_mask = (_vmask), \
	78	.enable_reg = (_ereg), \
	79	.enable_mask = (_emask), \
	80	.ops = &axp20x_ops, \
	81	}
	82
94c39041	83	#define AXP_DESC_SW(_family, _id, _match, _supply, _ereg, _emask) \
1b82b4e4	84	[_family##_##_id] = { \
e0bbb38c	85	.name = (_match), \
1b82b4e4 BB	86	.supply_name = (_supply), \
	87	.of_match = of_match_ptr(_match), \
	88	.regulators_node = of_match_ptr("regulators"), \
	89	.type = REGULATOR_VOLTAGE, \
	90	.id = _family##_##_id, \
1b82b4e4	91	.owner = THIS_MODULE, \
1b82b4e4 BB	92	.enable_reg = (_ereg), \
	93	.enable_mask = (_emask), \
	94	.ops = &axp20x_ops_sw, \
	95	}
	96
866bd951 BB	97	#define AXP_DESC_FIXED(_family, _id, _match, _supply, _volt) \
866bd951 BB	98	[_family##_##_id] = { \
e0bbb38c	99	.name = (_match), \
dfe7a1b0	100	.supply_name = (_supply), \
880fe82d CYT	101	.of_match = of_match_ptr(_match), \
880fe82d CYT	102	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	103	.type = REGULATOR_VOLTAGE, \
866bd951	104	.id = _family##_##_id, \
dfe7a1b0 CC	105	.n_voltages = 1, \
	106	.owner = THIS_MODULE, \
	107	.min_uV = (_volt) * 1000, \
	108	.ops = &axp20x_ops_fixed \
	109	}
	110
13d57e64 CYT	111	#define AXP_DESC_RANGES(_family, _id, _match, _supply, _ranges, _n_voltages, \
13d57e64 CYT	112	_vreg, _vmask, _ereg, _emask) \
866bd951	113	[_family##_##_id] = { \
e0bbb38c	114	.name = (_match), \
dfe7a1b0	115	.supply_name = (_supply), \
880fe82d CYT	116	.of_match = of_match_ptr(_match), \
880fe82d CYT	117	.regulators_node = of_match_ptr("regulators"), \
dfe7a1b0	118	.type = REGULATOR_VOLTAGE, \
866bd951	119	.id = _family##_##_id, \
13d57e64	120	.n_voltages = (_n_voltages), \
dfe7a1b0 CC	121	.owner = THIS_MODULE, \
	122	.vsel_reg = (_vreg), \
	123	.vsel_mask = (_vmask), \
	124	.enable_reg = (_ereg), \
	125	.enable_mask = (_emask), \
13d57e64 CYT	126	.linear_ranges = (_ranges), \
	127	.n_linear_ranges = ARRAY_SIZE(_ranges), \
	128	.ops = &axp20x_ops_range, \
dfe7a1b0 CC	129	}
dfe7a1b0 CC	130
dfe7a1b0 CC	131	static struct regulator_ops axp20x_ops_fixed = {
	132	.list_voltage = regulator_list_voltage_linear,
	133	};
	134
13d57e64	135	static struct regulator_ops axp20x_ops_range = {
dfe7a1b0 CC	136	.set_voltage_sel = regulator_set_voltage_sel_regmap,
dfe7a1b0 CC	137	.get_voltage_sel = regulator_get_voltage_sel_regmap,
13d57e64	138	.list_voltage = regulator_list_voltage_linear_range,
dfe7a1b0 CC	139	.enable = regulator_enable_regmap,
	140	.disable = regulator_disable_regmap,
	141	.is_enabled = regulator_is_enabled_regmap,
	142	};
	143
	144	static struct regulator_ops axp20x_ops = {
	145	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	146	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	147	.list_voltage = regulator_list_voltage_linear,
	148	.enable = regulator_enable_regmap,
	149	.disable = regulator_disable_regmap,
	150	.is_enabled = regulator_is_enabled_regmap,
	151	};
	152
1b82b4e4	153	static struct regulator_ops axp20x_ops_sw = {
1b82b4e4 BB	154	.enable = regulator_enable_regmap,
	155	.disable = regulator_disable_regmap,
	156	.is_enabled = regulator_is_enabled_regmap,
	157	};
	158
13d57e64 CYT	159	static const struct regulator_linear_range axp20x_ldo4_ranges[] = {
	160	REGULATOR_LINEAR_RANGE(1250000, 0x0, 0x0, 0),
	161	REGULATOR_LINEAR_RANGE(1300000, 0x1, 0x8, 100000),
8d4d5c3a MR	162	REGULATOR_LINEAR_RANGE(2500000, 0x9, 0x9, 0),
	163	REGULATOR_LINEAR_RANGE(2700000, 0xa, 0xb, 100000),
	164	REGULATOR_LINEAR_RANGE(3000000, 0xc, 0xf, 100000),
13d57e64 CYT	165	};
13d57e64 CYT	166
dfe7a1b0	167	static const struct regulator_desc axp20x_regulators[] = {
866bd951 BB	168	AXP_DESC(AXP20X, DCDC2, "dcdc2", "vin2", 700, 2275, 25,
	169	AXP20X_DCDC2_V_OUT, 0x3f, AXP20X_PWR_OUT_CTRL, 0x10),
	170	AXP_DESC(AXP20X, DCDC3, "dcdc3", "vin3", 700, 3500, 25,
	171	AXP20X_DCDC3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x02),
	172	AXP_DESC_FIXED(AXP20X, LDO1, "ldo1", "acin", 1300),
	173	AXP_DESC(AXP20X, LDO2, "ldo2", "ldo24in", 1800, 3300, 100,
	174	AXP20X_LDO24_V_OUT, 0xf0, AXP20X_PWR_OUT_CTRL, 0x04),
	175	AXP_DESC(AXP20X, LDO3, "ldo3", "ldo3in", 700, 3500, 25,
	176	AXP20X_LDO3_V_OUT, 0x7f, AXP20X_PWR_OUT_CTRL, 0x40),
13d57e64 CYT	177	AXP_DESC_RANGES(AXP20X, LDO4, "ldo4", "ldo24in", axp20x_ldo4_ranges,
	178	16, AXP20X_LDO24_V_OUT, 0x0f, AXP20X_PWR_OUT_CTRL,
	179	0x08),
866bd951 BB	180	AXP_DESC_IO(AXP20X, LDO5, "ldo5", "ldo5in", 1800, 3300, 100,
	181	AXP20X_LDO5_V_OUT, 0xf0, AXP20X_GPIO0_CTRL, 0x07,
	182	AXP20X_IO_ENABLED, AXP20X_IO_DISABLED),
dfe7a1b0 CC	183	};
dfe7a1b0 CC	184
1b82b4e4 BB	185	static const struct regulator_desc axp22x_regulators[] = {
	186	AXP_DESC(AXP22X, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
	187	AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
	188	AXP_DESC(AXP22X, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
	189	AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
	190	AXP_DESC(AXP22X, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
	191	AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
	192	AXP_DESC(AXP22X, DCDC4, "dcdc4", "vin4", 600, 1540, 20,
6b3600b4	193	AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(4)),
1b82b4e4	194	AXP_DESC(AXP22X, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
6b3600b4	195	AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
1b82b4e4	196	/* secondary switchable output of DCDC1 */
94c39041 CYT	197	AXP_DESC_SW(AXP22X, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
94c39041 CYT	198	BIT(7)),
1b82b4e4	199	/* LDO regulator internally chained to DCDC5 */
7118f19c	200	AXP_DESC(AXP22X, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
1b82b4e4 BB	201	AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
	202	AXP_DESC(AXP22X, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
	203	AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
	204	AXP_DESC(AXP22X, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
	205	AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
	206	AXP_DESC(AXP22X, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
	207	AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
	208	AXP_DESC(AXP22X, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
	209	AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
	210	AXP_DESC(AXP22X, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
	211	AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
	212	AXP_DESC(AXP22X, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
	213	AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
	214	AXP_DESC(AXP22X, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
	215	AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
	216	AXP_DESC(AXP22X, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
	217	AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
	218	AXP_DESC(AXP22X, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
	219	AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
	220	AXP_DESC(AXP22X, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
	221	AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
f40d4896 HG	222	/* Note the datasheet only guarantees reliable operation up to
	223	* 3.3V, this needs to be enforced via dts provided constraints */
	224	AXP_DESC_IO(AXP22X, LDO_IO0, "ldo_io0", "ips", 700, 3800, 100,
1b82b4e4 BB	225	AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
1b82b4e4 BB	226	AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
f40d4896 HG	227	/* Note the datasheet only guarantees reliable operation up to
	228	* 3.3V, this needs to be enforced via dts provided constraints */
	229	AXP_DESC_IO(AXP22X, LDO_IO1, "ldo_io1", "ips", 700, 3800, 100,
1b82b4e4 BB	230	AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
	231	AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	232	AXP_DESC_FIXED(AXP22X, RTC_LDO, "rtc_ldo", "ips", 3000),
	233	};
	234
636e2a39 HG	235	static const struct regulator_desc axp22x_drivevbus_regulator = {
	236	.name = "drivevbus",
	237	.supply_name = "drivevbus",
	238	.of_match = of_match_ptr("drivevbus"),
	239	.regulators_node = of_match_ptr("regulators"),
	240	.type = REGULATOR_VOLTAGE,
	241	.owner = THIS_MODULE,
	242	.enable_reg = AXP20X_VBUS_IPSOUT_MGMT,
	243	.enable_mask = BIT(2),
	244	.ops = &axp20x_ops_sw,
	245	};
	246
a51f9f46 CYT	247	static const struct regulator_linear_range axp809_dcdc4_ranges[] = {
	248	REGULATOR_LINEAR_RANGE(600000, 0x0, 0x2f, 20000),
	249	REGULATOR_LINEAR_RANGE(1800000, 0x30, 0x38, 100000),
	250	};
	251
	252	static const struct regulator_linear_range axp809_dldo1_ranges[] = {
	253	REGULATOR_LINEAR_RANGE(700000, 0x0, 0x1a, 100000),
	254	REGULATOR_LINEAR_RANGE(3400000, 0x1b, 0x1f, 200000),
	255	};
	256
	257	static const struct regulator_desc axp809_regulators[] = {
	258	AXP_DESC(AXP809, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
	259	AXP22X_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(1)),
	260	AXP_DESC(AXP809, DCDC2, "dcdc2", "vin2", 600, 1540, 20,
	261	AXP22X_DCDC2_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(2)),
	262	AXP_DESC(AXP809, DCDC3, "dcdc3", "vin3", 600, 1860, 20,
	263	AXP22X_DCDC3_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1, BIT(3)),
	264	AXP_DESC_RANGES(AXP809, DCDC4, "dcdc4", "vin4", axp809_dcdc4_ranges,
	265	57, AXP22X_DCDC4_V_OUT, 0x3f, AXP22X_PWR_OUT_CTRL1,
	266	BIT(4)),
	267	AXP_DESC(AXP809, DCDC5, "dcdc5", "vin5", 1000, 2550, 50,
	268	AXP22X_DCDC5_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(5)),
	269	/* secondary switchable output of DCDC1 */
	270	AXP_DESC_SW(AXP809, DC1SW, "dc1sw", NULL, AXP22X_PWR_OUT_CTRL2,
	271	BIT(7)),
	272	/* LDO regulator internally chained to DCDC5 */
	273	AXP_DESC(AXP809, DC5LDO, "dc5ldo", NULL, 700, 1400, 100,
	274	AXP22X_DC5LDO_V_OUT, 0x7, AXP22X_PWR_OUT_CTRL1, BIT(0)),
	275	AXP_DESC(AXP809, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
	276	AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(6)),
	277	AXP_DESC(AXP809, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
	278	AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(7)),
	279	AXP_DESC(AXP809, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
	280	AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
	281	AXP_DESC_RANGES(AXP809, DLDO1, "dldo1", "dldoin", axp809_dldo1_ranges,
	282	32, AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
	283	BIT(3)),
	284	AXP_DESC(AXP809, DLDO2, "dldo2", "dldoin", 700, 3300, 100,
	285	AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(4)),
	286	AXP_DESC(AXP809, ELDO1, "eldo1", "eldoin", 700, 3300, 100,
	287	AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
	288	AXP_DESC(AXP809, ELDO2, "eldo2", "eldoin", 700, 3300, 100,
	289	AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
	290	AXP_DESC(AXP809, ELDO3, "eldo3", "eldoin", 700, 3300, 100,
	291	AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
	292	AXP_DESC_IO(AXP809, LDO_IO0, "ldo_io0", "ips", 700, 3300, 100,
	293	AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
	294	AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	295	AXP_DESC_IO(AXP809, LDO_IO1, "ldo_io1", "ips", 700, 3300, 100,
	296	AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
	297	AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
	298	AXP_DESC_FIXED(AXP809, RTC_LDO, "rtc_ldo", "ips", 1800),
	299	AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
	300	};
	301
dfe7a1b0 CC	302	static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
	303	{
	304	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
866bd951 BB	305	u32 min, max, def, step;
	306
	307	switch (axp20x->variant) {
	308	case AXP202_ID:
	309	case AXP209_ID:
	310	min = 750;
	311	max = 1875;
	312	def = 1500;
	313	step = 75;
	314	break;
1b82b4e4	315	case AXP221_ID:
04e0981c	316	case AXP223_ID:
a51f9f46	317	case AXP809_ID:
1b82b4e4 BB	318	min = 1800;
	319	max = 4050;
	320	def = 3000;
	321	step = 150;
	322	break;
866bd951 BB	323	default:
	324	dev_err(&pdev->dev,
	325	"Setting DCDC frequency for unsupported AXP variant\n");
	326	return -EINVAL;
	327	}
	328
	329	if (dcdcfreq == 0)
	330	dcdcfreq = def;
dfe7a1b0	331
866bd951 BB	332	if (dcdcfreq < min) {
	333	dcdcfreq = min;
	334	dev_warn(&pdev->dev, "DCDC frequency too low. Set to %ukHz\n",
	335	min);
dfe7a1b0 CC	336	}
dfe7a1b0 CC	337
866bd951 BB	338	if (dcdcfreq > max) {
	339	dcdcfreq = max;
	340	dev_warn(&pdev->dev, "DCDC frequency too high. Set to %ukHz\n",
	341	max);
dfe7a1b0 CC	342	}
dfe7a1b0 CC	343
866bd951	344	dcdcfreq = (dcdcfreq - min) / step;
dfe7a1b0 CC	345
	346	return regmap_update_bits(axp20x->regmap, AXP20X_DCDC_FREQ,
	347	AXP20X_FREQ_DCDC_MASK, dcdcfreq);
	348	}
	349
	350	static int axp20x_regulator_parse_dt(struct platform_device *pdev)
	351	{
	352	struct device_node np, regulators;
	353	int ret;
866bd951	354	u32 dcdcfreq = 0;
dfe7a1b0 CC	355
	356	np = of_node_get(pdev->dev.parent->of_node);
	357	if (!np)
	358	return 0;
	359
a6016c52	360	regulators = of_get_child_by_name(np, "regulators");
dfe7a1b0 CC	361	if (!regulators) {
	362	dev_warn(&pdev->dev, "regulators node not found\n");
	363	} else {
dfe7a1b0 CC	364	of_property_read_u32(regulators, "x-powers,dcdc-freq", &dcdcfreq);
	365	ret = axp20x_set_dcdc_freq(pdev, dcdcfreq);
	366	if (ret < 0) {
	367	dev_err(&pdev->dev, "Error setting dcdc frequency: %d\n", ret);
	368	return ret;
	369	}
	370
	371	of_node_put(regulators);
	372	}
	373
	374	return 0;
	375	}
	376
	377	static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 workmode)
	378	{
866bd951 BB	379	struct axp20x_dev *axp20x = rdev_get_drvdata(rdev);
866bd951 BB	380	unsigned int mask;
dfe7a1b0	381
866bd951 BB	382	switch (axp20x->variant) {
	383	case AXP202_ID:
	384	case AXP209_ID:
	385	if ((id != AXP20X_DCDC2) && (id != AXP20X_DCDC3))
	386	return -EINVAL;
	387
	388	mask = AXP20X_WORKMODE_DCDC2_MASK;
	389	if (id == AXP20X_DCDC3)
	390	mask = AXP20X_WORKMODE_DCDC3_MASK;
dfe7a1b0	391
866bd951 BB	392	workmode <<= ffs(mask) - 1;
866bd951 BB	393	break;
dfe7a1b0	394
1b82b4e4	395	case AXP221_ID:
04e0981c	396	case AXP223_ID:
a51f9f46	397	case AXP809_ID:
1b82b4e4 BB	398	if (id < AXP22X_DCDC1 \|\| id > AXP22X_DCDC5)
	399	return -EINVAL;
	400
	401	mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP22X_DCDC1);
	402	workmode <<= id - AXP22X_DCDC1;
	403	break;
	404
866bd951 BB	405	default:
	406	/* should not happen */
	407	WARN_ON(1);
	408	return -EINVAL;
	409	}
dfe7a1b0 CC	410
	411	return regmap_update_bits(rdev->regmap, AXP20X_DCDC_MODE, mask, workmode);
	412	}
	413
	414	static int axp20x_regulator_probe(struct platform_device *pdev)
	415	{
	416	struct regulator_dev *rdev;
	417	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
866bd951	418	const struct regulator_desc *regulators;
765e8023 CYT	419	struct regulator_config config = {
	420	.dev = pdev->dev.parent,
	421	.regmap = axp20x->regmap,
866bd951	422	.driver_data = axp20x,
765e8023	423	};
866bd951	424	int ret, i, nregulators;
dfe7a1b0	425	u32 workmode;
a51f9f46 CYT	426	const char *dcdc1_name = axp22x_regulators[AXP22X_DCDC1].name;
a51f9f46 CYT	427	const char *dcdc5_name = axp22x_regulators[AXP22X_DCDC5].name;
636e2a39	428	bool drivevbus = false;
dfe7a1b0	429
866bd951 BB	430	switch (axp20x->variant) {
	431	case AXP202_ID:
	432	case AXP209_ID:
	433	regulators = axp20x_regulators;
	434	nregulators = AXP20X_REG_ID_MAX;
	435	break;
1b82b4e4	436	case AXP221_ID:
04e0981c	437	case AXP223_ID:
1b82b4e4 BB	438	regulators = axp22x_regulators;
1b82b4e4 BB	439	nregulators = AXP22X_REG_ID_MAX;
636e2a39 HG	440	drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
636e2a39 HG	441	"x-powers,drive-vbus-en");
1b82b4e4	442	break;
a51f9f46 CYT	443	case AXP809_ID:
	444	regulators = axp809_regulators;
	445	nregulators = AXP809_REG_ID_MAX;
	446	break;
866bd951 BB	447	default:
	448	dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
	449	axp20x->variant);
	450	return -EINVAL;
	451	}
	452
765e8023 CYT	453	/* This only sets the dcdc freq. Ignore any errors */
765e8023 CYT	454	axp20x_regulator_parse_dt(pdev);
dfe7a1b0	455
866bd951	456	for (i = 0; i < nregulators; i++) {
7118f19c CYT	457	const struct regulator_desc *desc = &regulators[i];
	458	struct regulator_desc *new_desc;
	459
	460	/*
	461	* Regulators DC1SW and DC5LDO are connected internally,
	462	* so we have to handle their supply names separately.
	463	*
	464	* We always register the regulators in proper sequence,
	465	* so the supply names are correctly read. See the last
	466	* part of this loop to see where we save the DT defined
	467	* name.
	468	*/
a51f9f46 CYT	469	if ((regulators == axp22x_regulators && i == AXP22X_DC1SW) \|\|
	470	(regulators == axp809_regulators && i == AXP809_DC1SW)) {
	471	new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
	472	GFP_KERNEL);
	473	*new_desc = regulators[i];
	474	new_desc->supply_name = dcdc1_name;
	475	desc = new_desc;
	476	}
	477
	478	if ((regulators == axp22x_regulators && i == AXP22X_DC5LDO) \|\|
	479	(regulators == axp809_regulators && i == AXP809_DC5LDO)) {
	480	new_desc = devm_kzalloc(&pdev->dev, sizeof(*desc),
	481	GFP_KERNEL);
	482	*new_desc = regulators[i];
	483	new_desc->supply_name = dcdc5_name;
	484	desc = new_desc;
7118f19c CYT	485	}
	486
	487	rdev = devm_regulator_register(&pdev->dev, desc, &config);
dfe7a1b0 CC	488	if (IS_ERR(rdev)) {
dfe7a1b0 CC	489	dev_err(&pdev->dev, "Failed to register %s\n",
866bd951	490	regulators[i].name);
dfe7a1b0 CC	491
	492	return PTR_ERR(rdev);
	493	}
	494
765e8023 CYT	495	ret = of_property_read_u32(rdev->dev.of_node,
765e8023 CYT	496	"x-powers,dcdc-workmode",
dfe7a1b0 CC	497	&workmode);
	498	if (!ret) {
	499	if (axp20x_set_dcdc_workmode(rdev, i, workmode))
	500	dev_err(&pdev->dev, "Failed to set workmode on %s\n",
866bd951	501	rdev->desc->name);
dfe7a1b0	502	}
7118f19c CYT	503
	504	/*
	505	* Save AXP22X DCDC1 / DCDC5 regulator names for later.
	506	*/
a51f9f46 CYT	507	if ((regulators == axp22x_regulators && i == AXP22X_DCDC1) \|\|
	508	(regulators == axp809_regulators && i == AXP809_DCDC1))
	509	of_property_read_string(rdev->dev.of_node,
	510	"regulator-name",
	511	&dcdc1_name);
	512
	513	if ((regulators == axp22x_regulators && i == AXP22X_DCDC5) \|\|
	514	(regulators == axp809_regulators && i == AXP809_DCDC5))
	515	of_property_read_string(rdev->dev.of_node,
	516	"regulator-name",
	517	&dcdc5_name);
dfe7a1b0 CC	518	}
dfe7a1b0 CC	519
636e2a39 HG	520	if (drivevbus) {
	521	/* Change N_VBUSEN sense pin to DRIVEVBUS output pin */
	522	regmap_update_bits(axp20x->regmap, AXP20X_OVER_TMP,
	523	AXP22X_MISC_N_VBUSEN_FUNC, 0);
	524	rdev = devm_regulator_register(&pdev->dev,
	525	&axp22x_drivevbus_regulator,
	526	&config);
	527	if (IS_ERR(rdev)) {
	528	dev_err(&pdev->dev, "Failed to register drivevbus\n");
	529	return PTR_ERR(rdev);
	530	}
	531	}
	532
dfe7a1b0 CC	533	return 0;
	534	}
	535
	536	static struct platform_driver axp20x_regulator_driver = {
	537	.probe = axp20x_regulator_probe,
	538	.driver = {
	539	.name = "axp20x-regulator",
dfe7a1b0 CC	540	},
	541	};
	542
	543	module_platform_driver(axp20x_regulator_driver);
	544
	545	MODULE_LICENSE("GPL v2");
	546	MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
	547	MODULE_DESCRIPTION("Regulator Driver for AXP20X PMIC");
d4ea7d86	548	MODULE_ALIAS("platform:axp20x-regulator");